This is all conjecture and hindsight. The only concern about Beckham going into his second year in the majors was about his defense. There was zero talk about possible issues with his swing. Everyone thought he would be able to hit the ball at the major league level after his first successful season. That goes for people in and outside of the organization.

There were people outside the organization after the draft who thought his upside wasn't even an everyday player, so I doubt half a season did much to dissuade that.